Electric regulation.



J. L. CREVELING.

ELECTRIC REGULATION.

APPLICATION FILED. OCT. 7| 19H. 1,236,91 6. Patented Aug. 14, 1917.

72 73 z r/ 9 4 a 6 5 Q 17 9 fliEiiEiEil liiiififlfi 7 1- Q 15 Q 20 I 10 l- I2 19 4- 25 7'7 (1 WITNESSES I mmvm rdQp A-r 1 4 JOHN Ii. CREVELING, OF NEW YORK, 1v. Y.,

LIGHTING COMPANY, A CORPORATION OF SAFETY CAR HEATING AND NEW JERSEY.

ASSIGNOR TO ELECTRIC REGULATION.

1 Application filed October 7, 1911.

To all whom it may concern:

Be it known that I, JOHN L. CREvELINe, a

resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Electric Regulation, as set forth in the annexed specification and drawing forming a part thereof.

My invention relates to that class of electric regulation wherein it is desired to regulate a dynamo or generator to supply current to a system in which it is advantageous to regulate the generator automatically and cut the same into circuit and out of circuit automatically as, for example, a system wherein a dynamo driven at variable speeds is used to charge a storage batteryand operate lamps Or other translating devices.

The drawing is a diagrammatic representation of one type of such system comprebending the elements of my invention.

In the drawing 1 represents a dynamo or generator provided with the usual field coil 2 having in series therewith the variable resistances 3 and 4 indicated as of the carbon pile variety. The resistance 3 is controlled by the lever 5 normally drawn in an upward direction as by the adjustable spring 6 in such manner as to tend to compress the carbon pile 3 and lower the resistance thereof.

The lever 5 is provided at one extremity with the core of magnetic material 7 and it will be obvious that motion imparted to the core may regulate the generator by manipulation of the resistance 3. The resistance 4 is controlled by the lever B normally drawn in an upward direction as by the spring 9 in such manner as to tend to compress the carbon pile 4 and lower the resistance thereof. The

lever 8 is provided at one extremity with the core of magnetic material 10 and it will be obvious that motion imparted to said core may, therefore, regulate the generator by operating the resistance4. 11 represents the positive lead of the generator and is connected with the positive side of the storage battery 12 and translating devices 13. The negative side of the storage battery 12 and the translating devices 13 are connected with the main 14 which is carried to the contact member 15. 16 represents a second contact member from which the lead 17 is carried to the solenoid coil 18 which has its opposite terminal connected with the negative termi nal of the generator. The solenoid coil 18 Specification of Letters Patent.

Patented Aug. 14, 1917. Serial N 0. 653,310.

surrounds the core 10 in such manner that when energized it tends to draw said core downwardly and increase the resistance 4. 19 is a solenoid coil surrounding the core 7 in such manner that when energized it tends to pull the core 7 downwardly and increase the resistance 3. The solenoid coil 19 is connected with the lead 11 as by the wire 20 and with the solenoid coil 22 as by the wire 21. The solenoid coil 22 has its remaining terminal connected as by the wire 23 with one end of another solenoid coil 24, the opposite end of which is connected as by the wire 25 with the negative lead 17 of the generator 17. Therefore, the solenoid coils 19, 22 and 24 are in series across the generator leads. The solenoid coils 22 and 24 are preferably wound upon spools of non-magnetic material and carried at opposite ends of a lever 23 pivoted as at 27. This lever 26 is provided with an extension or lever 28 carrying an electrical contact 29 adapted to cause communication between said contacts 15 and 16. A spring 30 tends to swing the lever 26 in a clockwise direction and the limit of motion that may be given the lever in this direction is determined by the adjustable stop 31. The solenoid coils 22 and 24 are so wound that when energized the coil 22 sets up a magneto-motive force in the same direction as that set up by the coil 19 and the mag If the generator be running at such speed i that its electro-motive force is below that of the storage battery and the lever 26 be in the position shown in the drawing, current will flow through the field winding 2 and the generator voltage may be varied by Variation of the resistances 3 or 4. Current will also flow from the lead 11 through wire 20, solenoid coil 19, wire 21, solenoid coil 22, wire 23, solenoid coil 24 and wire 25 to the generator and this current will cause the solenoid coil 19 to tend to draw the core 7 downwardly and will also cause said coils 19 and 22 to attract each other and in this manner tend to swing the lever 26 and close the circuit between contacts 15, 29 and 16. If, now, the generator speed be increased until its voltage is substantially equal to that of the battery 12, I so adjust the spring 30 and the stop 31 that when this point is reached the solenoid coil 22 will move toward the solenoid coil 19 and establish the connection between contacts 15, 29 and 16 and thus complete the generator supply circuit. If the generator speed continues to increase, current will then flow from the generator through the lead 11, battery 12 and translating devices 13, main 14, contacts 15, 29, 16, lead 17 and solenoid coil 18 to the generator. The current in the solenoid coil 18 will cause it to repel the solenoid coil 24 and assist in holding the circuit closed at the contacts 15, 29, 16, and if the generator speed still increases the current supplied thereby will tend to increase and when the maximum current desired is flowing in the coil 18 I so adjust the spring 9 that excess above this desired maximum will be prevented by the coil 18 drawing the core '10 downwardly and increasing the resistance 4: in a well-known manner. If the generator now continue to charge the batteries until their voltage shall rise to that point causing the maximum desired voltage across the battery terminal to be impressed upon the line, I then so adjust the spring 6 that this voltage will not be exceeded owing to the action 0 coil 19 depressing the lever 5 and increasing the resistance 3 in a well-known manner. If at any time the generator voltage fails to equal that of the storage battery, the attraction between coils 19 and 22 will be little in excess of the pull of the spring 30 in an opposite direction and the repulsion between coils 18 and 24; will also be small, and if the voltage of the generator fall slightly below that of the battery, a slight back discharge through the coil 18 will cause this coil to attract the coil 24 and swing the lever 26 in a clockwise direction and open the circuit at contacts 15, 29, 16 and disconnect the generator from the battery until its voltage shall again reach that point for which the .switch mechanism is set to close.

From the foregoing it will be obvious that I have produced a system wherein the generator is regulated in response to current fluctuations and also in response to voltage fluctuations and in which the current and voltage regulating means cooperate to cut the generator into and out of circuit in a predetermined and desired manner.

I do not wish in any way to limit myself to the details of construction shown in the accompanying drawing nor to the exact mode of operation set forth in the specification which are given merely to illustrate one type of system embodying the essentials of my invention which is as set forth in the following claims 1. The combination of agenerator, regulating means therefor, means for actuating said regulating means, a battery, a switch for connecting the generator to the battery, and an element permanently connected with the generator and operated by the actuating means for putting the' generator and the battery in closed circuit relation.

2. The combination of a generator, a regulator therefor, means for operating the regulator, a battery, a switch for connecting the generator and the battery, and an element permanently connected with the generator and actuated by the operating means for breaking the circuit between the generator and the battery.

3. The combination of a generator, :1 regulator therefor, means for actuating the regulator, a battery, a switch between the generator and the battery, and means permanently connected with the generator and operated by the actuating means for opening and closing said switch.

4. The combination of a generator, a regulator therefor, means for operating the regulator, a battery, a switch comprising a movable element between the generator and the battery, and means mounted on the movable element of the switch and actuated by the operating means for causing the switch to connect the generator and the battery.

5. In apparatus of the class described, in combination, a generator, a battery, a switch adapted to connect said generator with said battery, a current coil provided. with means adapted to affect the position of said switch, regulating means for said generator, and a voltage coil controlling said regulatingmeans and presenting a field substantially unaffected by said current coil, said voltage coil co-acting with said current coil in controlling the position of said switch.

6. In apparatus of the class described, in combination, a generator, abattery, a switch adapted to connect said generator with said battery, a voltage coil and a current coil conjointly controlling said switch, and a regulating device for said generator controlled by said voltage coil and independent of fluctuations in the field strength of said current coil.

7. A system of current consumption embracing a generator, a storage battery, and translating devices in circuit therewith, means for regulating the generator, means for operating the regulator in response to changes in current and voltage delivery by the generator, a switch between the generator and the translating devices. and means in series relation with a part of the operating means for the regulating means and actuated by said regulating means to cause the switch to open and close circuit relation.

8. A system of current consumption embracing a generator, and a storage battery and translating devices in circuit therewith, a regulator for the generator, a plurality of means for operating the regulator,'part of which is controlled by the voltage and part by the current flow of the system, and a switch adapted to close said circuit and actuated jointly by the voltage and current means for opening and closing the circuit from the vices.

9. A system of current consumption com prising a generator, a storage battery, translating devices in circuit therewith, a regulator for the generator embracing. a plurality of variable resistances, means'in shunt with the translation circuit for operating part of said resistances, means in series with the translation circuit and the generator foroperating the remainder of said resistances, and a switch associated with means in series with the operating means in shunt with the translating devices for causing the switch to connect and disconnect the translating devices and the generator.

10. The combination of a generator and a battery in series in a normally open circuit; a switch member adapted to close the circuit; voltage controlled means and means carried by the switch member cooperating to actuate the latter to close the circuit; a regulator for the generator; and means actuated by the voltage controlled means for operating the a regulator.

11. The combination of a generator and a battery in series in a normally open circuit; a switch member adapted to close the circuit; current controlled means and means carried by the switch member cooperatlng to generator to the translating deactuate the latter to close the circuit; a regulator for the generator; and means actuated by the current controlled means for operating the regulator.

12. The combination of a generator and a battery in series in a normally open circuit; a switch member adapted to close the circuit; voltage controlled means and current controlled means cooperating with means carried by the switch member to actuate the latter to close the circuit; a regulator for the generator; and means actuated by the voltage controlled means and by the current controlled means for operating said regulator.

13. The combination of a generator and a battery in series in a normally open circuit; a switch member adapted to close the circuit; voltage controlled means and current controlled means cooperating with means carried by the switch member to actuate the latter to close the circuit; means whereby a part of the said cooperative circuit closing means may operate at times to open the switch; a regulator for the generator; and means actuated by the voltage controlled means and by the current controlled means for operating said regulator.

14. In apparatus of the class described, in combination, a generator, a battery, a switch adapted to connect said generator with said battery, a voltage coil and a current coil conjointly controlling said switch, and a regulating device for said generator controlled by said voltage coil and independent of fluctuations in the field strength of said current coil, said regulating device acting; to vary the resistance of the field circuit of said generator.

JOHN L. CREVELING.

Witnesses:

CHAs. MoC. CHAPMAN, ANNA M. WALL. 

